Oregon County
| Use attributes for filter ! | |
| Area | 2051 |
|---|---|
| Population | 10,541 (2018) |
| Largest city | Thayer |
| Cities | Alton |
| Thayer | |
| Koshkonong | |
| Rivers | Eleven Point River |
| Warm Fork Spring River | |
| Mill Creek | |
| Date of Reg. | |
| Date of Upd. | |
| ID | 3013384 |
About Oregon County
Oregon County is a county located in the southern portion of the U. S. state of Missouri. As of the 2010 census, the population was 10,881. Its county seat is Alton. The county was officially organized on February 14, 1845, and was named for the Oregon Territory in the northwestern United States.